Associated Press: The National Renewable Energy Laboratory says its scientists have developed a device that can convert a record 40.8 percent of the light that hits it into electricity. NREL spokesman George Douglas says the new device still has room for improvement. Its design differs from that of a company whose device converted 40.7 percent of concentrated sunlight that hit it into electricity for the previous record. The new inverted metamorphic triple-junction solar cell makes use of …